Statistics - Sampling Projects

Study excerpt: "The sample for chis study included 27 Chinese immigrant elders, 11 adult children who

Study excerpt: "The sample for chis study included 27 Chinese immigrant elders, 11 adult children who were caregivers for Chinese parents, and 12 health and social service providers who served this immigrant group.... Elders were initially recruited through two social service agencies chat target Chinese elders in the greater Boston area. ... Providers from various disciplines and practice areas were identified by case workers at two social service agencies. ... People already participating in the study were asked to refer elders who were not using services at the two initial recruitment sites." ‘
Study excerpt: "Subjects were recruited through advertisements placed in various newspapers in Lexington, Kentucky.... Individuals reporting any past or present drug- or alcohol-related problems, serious head injuries, learning disabilities, or psychotic symptomatology were excluded from participation."
Study excerpt "A mailing list comprising 3,500 randomly selected names and addresses of the 68,000 AACN members was purchased. Every seventh nurse was ... sampled to yield a group of 500 nurses, all of whom were invited by mall to participate in the study. Two hundred and forty-seven nurses consented to participate ( $49 \%$ response rate) and completed the surveys."
Study excerpt: "In brief, women 18-35 years old were randomly sampled from census blocks located within a 0.5-miles radius of drug copping sites (sites where crack, cocaine, or heroine are sold)."
Study excerpt: "Every weekday, the team selected a minimum of five patients among parents admitted during the preceding 24 hours, by a random numbers system. ... After informed consent, the patients were stratified by age: < or $\geq 60$ years, and randomized in blocks of 6 , usually sequentially numbered sealed non-transparent envelopes, which were opened to allocate patients into one of two groups: control or intervention."
Study excerpt "The 679 subjects who comprise the initial DANDY [Development and Assessment of Nicotine Dependence in Youths] cohort represent a response rate of $94 \%$ of the 721 students who were invited, and $76 \%$ of all seventh graders $(n=900)$
Study excerpt: "Nacional lists of NPs [nurse practitioners] and PAs [physician assistants] were obtained from Medical Marketing Services and a total of 3,900 individuals (NPs [n=1,950] and PAs [n=1,950] were randomly selected from the lists. ... The stratified samples were assigned randomly in equal allocations to one of three incentive groups."
Study excerpt: "Participants were recruited from a local hospital, a visiting nurse association, a mall health center, and professional referral. ... Participants were selected to allow diversity of ages, gender, and ethnicity to capture information-rich data that could be used for extrapolation of patterns and themes central to the heart failure experience rather than demographics."
Study excerpt: "Participants were recruited through personal acquaintances and professional contacts with several local black ministers ..."
Study excerpt: "Patients with baseline [hemoglobin A1c] levels $\geq 7.5 \%$ were invited to enroll in the study and assigned randomly to the intervention or control group."